The Eagle-class frigate was designed by Illium Shipyards as an escort for the Thera-class carrier. Operating in pairs, they're intended to get between the Thera and a threat. To do so the Eagles have large engines capable of moving them 30% faster than a Thera. To destroy the threat, the Eagle is equipped with a series of anti-WarShip and anti-aerospace Fighter defenses. They also carry a squadron of six aerospace fighters for additional point defense or recon missions.

Like other WarShips in the FWLM fleet, the Eagle class vessels are equipped with an HPG system.[9] Prior to the Jihad these HPG's were staffed by Word of Blake technicians.

In 3068 every Eagle was recalled to the Illium Shipyards to fix a problem found in their life support systems that was first discovered in the FWLS Percival's shakedown cruise.[10]

As an escort vessel for an extremely expensive WarShip, the Eagle needs to provide defense against any threat, regardless of source. To combat other WarShips, the Eagle relies on its Naval Autocannon and nose mounted Heavy Naval Gauss rifle. These weapons can make short work of any attacking WarShips and run off any attacking DropShips. The Naval Lasers carried by the Eagle are used to supplement the Naval Autocannon in WarShip combat, but are really intended to attack any enemy Assault DropShips or Pocket WarShips that may be in the area.

To defend against aerospace fighters the Eagle mounts a massive array of 'Mech scale pulse lasers. These weapons allow the Eagle-class ships to destroy any aerospace fighter foolish enough to attack it. To supplement these defenses, every Eagle mounts an array of Anti-Missile Systems covering every firing arc.

The Eagle has three cargo bays. Bay 1 contains the aerospace fighter squadron. Bays 2 and 3 carry almost 69,000 tons of cargo. Typically the Eagle-class ships carry additional foodstuffs, spare parts, and ammunition, which allows them to complete escort duties. To supplement their own weapons and fighter forces, the Eagle has four DropShip docking collars.